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AT91M40807

1371CS–ATARM–02/02

The Watchdog (WD) can be used to prevent system lock-up if the software becomes

trapped in a deadlock.

The Special Function (SF) module integrates the Chip ID, the Reset Status and the Pro-

tect registers.

User Peripherals

Two USARTs, independently configurable, enable communication at a high baud rate in

synchronous or asynchronous mode. The format includes start, stop and parity bits and

up to 8 data bits. Each USART also features a Timeout and a Time Guard register, facil-

itating the use of the two dedicated Peripheral Data Controller (PDC) channels.

The 3-channel, 16-bit Timer Counter (TC) is highly programmable and supports capture

or waveform modes. Each TC channel can be programmed to measure or generate dif-

ferent kinds of waves, and can detect and control two input/output signals. The TC has

also 3 external clock signals.